Memcached基础入门和Java操作Memcached实现增删改查

1.下载Memcached

32位系统 1.2.5版本：http://static.runoob.com/download/memcached-1.2.5-win32-bin.zip

32位系统 1.2.6版本：http://static.runoob.com/download/memcached-1.2.6-win32-bin.zip

32位系统 1.4.4版本：http://static.runoob.com/download/memcached-win32-1.4.4-14.zip

64位系统 1.4.4版本：http://static.runoob.com/download/memcached-win64-1.4.4-14.zip

32位系统 1.4.5版本：http://static.runoob.com/download/memcached-1.4.5-x86.zip

64位系统 1.4.5版本：http://static.runoob.com/download/memcached-1.4.5-amd64.zip

2.解压下载好的文件到指定目录

3.安装Memcached，以管理员的权限运行命令：

c:\memcached\memcached.exe -d install

4.安装完成之后，启动/停止Memcached，以管理员权限运行以下命令：

c:\memcached\memcached.exe -d start

c:\memcached\memcached.exe -d stop

5.下载jar 包，下载地址：spymemcached-2.10.3.jar。将下载好的Jar添加到项目中去。

6.测试连接到Memcached

//连接到Memcached

protected static MemcachedClient connect() {

MemcachedClient mcc = null;

try {

// 本地连接 Memcached 服务

mcc = new MemcachedClient(new InetSocketAddress("127.0.0.1", 11211));

} catch (IOException e) {

e.printStackTrace();

}

return mcc;

}

7.Java操作Memcached实现增删改查：

//save

public void save() {

try {

MemcachedClient mcc = connect();

// 存储数据

Future fo = mcc.add("memcached", 900, "Memcached");

// 输出值

System.out.println("Memcached value in cache - " + mcc.get("memcached"));

fo = mcc.add("test", 900, "test_1");

// 输出值

System.out.println("test value in cache - " + mcc.get("memcached"));

// 关闭连接

mcc.shutdown();

} catch (Exception ex) {

System.out.println(ex.getMessage());

}

}

//find

public void find() {

try {

MemcachedClient mcc = connect();

// 存储数据

Future fo = mcc.add("memcached", 900, "Memcached");

// 输出值

System.out.println("Memcached value in cache - " + mcc.get("memcached"));

fo = mcc.add("test", 900, "test_1");

// 输出值

System.out.println("test value in cache - " + mcc.get("memcached"));

// 关闭连接

mcc.shutdown();

} catch (Exception ex) {

System.out.println(ex.getMessage());

}

}

//update

public void update() {

try {

MemcachedClient mcc = connect();

// 存储数据

Future fo = mcc.add("memcached", 900, "Memcached");

// 输出值

System.out.println("Memcached value in cache - " + mcc.get("memcached"));

fo = mcc.replace("memcached", 900, "memcached_new");

// 输出值

System.out.println("memcached_new value in cache - " + mcc.get("memcached"));

// 关闭连接

mcc.shutdown();

} catch (Exception ex) {

System.out.println(ex.getMessage());

}

}

//delete

public void del() {

try {

MemcachedClient mcc = connect();

// 存储数据

Future fo = mcc.add("memcached_new", 900, "Memcached");

// 输出值

System.out.println("Memcached value in cache - " + mcc.get("memcached_new"));

fo = mcc.delete("memcached_new");

// 关闭连接

mcc.shutdown();

} catch (Exception ex) {

System.out.println(ex.getMessage());

}

}

8.Memcached其它存储命令操作

//append

public void append() {

try {

MemcachedClient mcc = connect();

// 存储数据

Future fo = mcc.set("test_append", 900, "Append");

// 输出值

System.out.println("Append value in cache - " + mcc.get("test_append"));

fo = mcc.append("append","append_1");

// 输出值

System.out.println("append_1 value in cache - " + mcc.get("append"));

// 关闭连接

mcc.shutdown();

} catch (Exception ex) {

System.out.println(ex.getMessage());

}

}

//prepend

public void prepend() {

try {

MemcachedClient mcc = connect();

// 存储数据

Future fo = mcc.set("test_prepend", 900, "Prepend");

// 输出值

System.out.println("Prepend value in cache - " + mcc.get("test_prepend"));

fo = mcc.prepend("prepend","prepend_1");

// 输出值

System.out.println("prepend_1 value in cache - " + mcc.get("prepend"));

// 关闭连接

mcc.shutdown();

} catch (Exception ex) {

System.out.println(ex.getMessage());

}

}

//cas

public void cas() {

try {

MemcachedClient mcc = connect();

// 存储数据

Future fo = mcc.set("test_cas", 900, "CAS");

// 输出值

System.out.println("CAS value in cache - " + mcc.get("test_cas"));

CASValue cas = mcc.gets("test_cas");

System.out.println("cas value---"+cas.getCas());

// 关闭连接

mcc.shutdown();

} catch (Exception ex) {

System.out.println(ex.getMessage());

}

}

9.Memcached查找命令：

get memcached_new

get memcached,memcached_new,test_append

gets memcached_new

gets memcached,memcached_new,test_append

delete memcached

key memcached初始值为10,使用incr之后key memcached 值变成15

set memcached 900 10

incr memcached 5

key memcached初始值为10,使用decr之后key memcached 值变成5

set memcached 900 10

decr memcached 5

10.Memcached统计命令：

stat xxx

stat items xxx

stat 1:xxx

stat xx xx

set memcached 900 10

flush_all